From a0ebeb988d63d94da086b72daf0691f67584724a Mon Sep 17 00:00:00 2001
From: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Date: Mon, 22 Dec 2008 11:31:12 +0000
Subject: - fix fpclassify, signbit, isfinite, isnan, isinf macros for long
 double math support - add rule to create preprocessor output for float- and
 long double math wrapper

---
 include/math.h | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/math.h b/include/math.h
index ae5d6ec70..15bc9ccc6 100644
--- a/include/math.h
+++ b/include/math.h
@@ -46,6 +46,10 @@ __BEGIN_DECLS
 /* Get general and ISO C99 specific information.  */
 #include <bits/mathdef.h>
 
+#if !(defined _LIBC && (defined NOT_IN_libc && defined IS_IN_libm))
+# define libm_hidden_proto(name, attrs...)
+#endif
+
 /* The file <bits/mathcalls.h> contains the prototypes for all the
    actual math functions.  These macros are used for those prototypes,
    so we can easily declare each function as both `name' and `__name',
@@ -55,15 +59,32 @@ __BEGIN_DECLS
   __MATHDECL (_Mdouble_,function,suffix, args)
 #define __MATHDECL(type, function,suffix, args) \
   __MATHDECL_1(type, function,suffix, args); \
-  __MATHDECL_1(type, __CONCAT(__,function),suffix, args)
+
 #define __MATHCALLX(function,suffix, args, attrib)	\
   __MATHDECLX (_Mdouble_,function,suffix, args, attrib)
 #define __MATHDECLX(type, function,suffix, args, attrib) \
   __MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
-  __MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
+  __MATHDECLI_MAINVARIANT(function)
+
+
 #define __MATHDECL_1(type, function,suffix, args) \
   extern type __MATH_PRECNAME(function,suffix) args __THROW
-
+/* Decls which are also used internally in libm.
+   Only the main variant is used internally, no need to try to avoid relocs
+   for the {l,f} variants.  */
+#define __MATHCALLI(function,suffix, args)	\
+  __MATHDECLI (_Mdouble_,function,suffix, args)
+#define __MATHDECLI(type, function,suffix, args) \
+  __MATHDECL_1(type, function,suffix, args); \
+  __MATHDECLI_MAINVARIANT(function)
+/* Private helpers for purely macro impls below.
+   Only make __foo{,f,l} visible but not (the macro-only) foo.  */
+#define __MATHDECL_PRIV(type, function,suffix, args, attrib) \
+  __MATHDECL_1(type, __CONCAT(__,function),suffix, args) \
+						__attribute__ (attrib); \
+  libm_hidden_proto(__MATH_PRECNAME(__##function,suffix))
+
+#define __MATHDECLI_MAINVARIANT libm_hidden_proto
 #define _Mdouble_		double
 #define __MATH_PRECNAME(name,r)	__CONCAT(name,r)
 # define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD
@@ -72,7 +93,9 @@ __BEGIN_DECLS
 #undef	_Mdouble_
 #undef _Mdouble_BEGIN_NAMESPACE
 #undef _Mdouble_END_NAMESPACE
-#undef	__MATH_PRECNAME
+#undef __MATH_PRECNAME
+#undef __MATHDECLI_MAINVARIANT
+#define __MATHDECLI_MAINVARIANT(x)
 
 #if defined __USE_MISC || defined __USE_ISOC99
 
-- 
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